Could not communicate with the server
I tried to install WhatsApp on my wife's gifted iPhone 7s, but got confused by the iCloud account setup. I mistakenly entered card details and got an error. After realizing my mistake, I attempted to create an iCloud account correctly, but was locked out due to too many attempts. I asked a friend to create an iCloud account on their phone, but now I can't connect to the server. I need help fixing this issue and either connecting to the server or creating a new account. Thanks.